IT software development · Card technology

Software that powers
card programmes.

dubois.sg is an IT software development company specialising in card technology and enterprise software solutions. We help businesses build, manage and maintain efficient, scalable card management systems.

Let’s talk Explore our technology
01Software development
02System integration
03API integration
04Technical support

01 / Technology

Technology and software infrastructure for card management

We focus on technology development and software infrastructure. Our clients run their card programmes; we build and maintain the systems behind them.

Virtual card systems

Software for issuing and managing virtual cards, from card creation to controls and status tracking.

Physical card systems

Systems for physical card programmes, covering production integration, activation and replacement.

Corporate card management

Software for companies to manage employee cards, spend limits, permissions and reporting.

System integration

Connect card systems with your existing core, finance and operations software.

API integration

Design, build and integrate APIs so your products and partners can work with card services.

Technical support

Ongoing maintenance, monitoring and technical support to keep systems efficient and scalable.

Who we work with

  • Card programme operators
  • Fintech companies
  • Enterprises
  • Financial institutions

02 / For developers

Modern issuing APIs, built for engineers

Card network messaging, authorisation and compliance checks, wrapped in clear REST APIs and real-time webhooks.

  • Sandbox environment

    Simulate card transactions, 3-D Secure, FX movements and disputes before going live.

  • Secure card display

    Embeddable components show card details to cardholders without sensitive card data touching your servers.

  • Webhooks & reconciliation

    Real-time event streams and automated reconciliation exports.

issuing-api
POST /v1/cards
Idempotency-Key: 7f9c2ba0-12e4-4c9a

{
  "cardholder_id": "ch_88219",
  "card_form": "virtual",
  "currency": "SGD",
  "controls": {
    "daily_limit": 5000,
    "blocked_mcc_groups": ["gambling"]
  }
}

→ 201 Created
{ "id": "crd_99281a0f", "status": "active" }
Illustrative example

03 / Delivery models

Three ways to work with us

Whether you have a large engineering team or want to launch quickly, we shape delivery around you.

Turnkey

White-label

Deploy our cardholder web portal, mobile apps and operations dashboard under your own brand and domain.

  • Custom branding and domain
  • Cardholder card controls
  • Partner and fee tier configuration
Integrate

Headless API

Embed card issuing in your existing app through APIs, keeping full control of the user experience.

  • Issuing, limits, freeze and close APIs
  • Integration with your own ledger and core systems
  • Dedicated solution architect support
Build

Custom development

Bespoke software development and system integration for card programmes and enterprise systems.

  • Source-level customisation
  • Integration with core and finance systems
  • Ongoing maintenance and technical support

04 / Getting started

Your programme. A clear path to launch.

We work as your technology partner: we start with your business, then design, build and integrate the software around it.

  1. 01

    Understand your business

    Explore your users, markets and use cases to agree on what the card programme needs to achieve.

  2. 02

    Design the solution

    Define card types, funding flows, controls and the cardholder experience your programme will offer.

  3. 03

    Build & integrate

    We build and configure the software, then connect it to your product through APIs, with support through testing and go-live.

  4. 04

    Launch & support

    You launch cards to your users; we keep the technology running, monitored and improving as you grow.

05 / Our approach

Built with care.
Run with discipline.

Good card technology considers business boundaries, risk and security together. These principles guide our work from the first conversation.

01

Compliance awareness

Customer identification, programme suitability and market requirements are considered from the planning stage.

02

Risk controls

Spend rules, monitoring and handling procedures are designed around your card use cases.

03

Security by design

Data protection, access permissions and secure integration stay in view from onboarding through daily operations.

04

Transparency

Clear reporting on cards, balances and activity, so you always know the state of your programme.

06 / About DuBois

Enduring principles, built for the digital age.

DuBois carries a heritage of trust and transparency that began with Swiss private banking and continues today in Swiss gold.

Based in Singapore, dubois.sg is the IT software development company within DuBois, focused on technology development and software infrastructure for card management systems.

SingaporeIssuing technology only · no merchant acquiring

Visit DuBois Gold

Let’s build your card technology

Your next chapter starts here

Tell us about your business and your card technology needs. We’ll work with you to design, build and maintain the right system.

Contact DuBois

info@dubois.sg